Elastic dope dyed yarn composite of two colors and process of manufacturing same

ABSTRACT

An elastic dope dyed yarn composite of two colors and process of manufacturing same is provided. The elastic dope dyed yarn composite of two colors includes an SDY having fibers being dope dyed, a POY drawn from dope dyed synthetic materials; and an elastic yarn. The SDY, the POY, and the elastic yarn are twisted together to form the elastic dope dyed yarn composite of two colors. The process is water saving and energy saving and causes no pollution. The elastic dope dyed yarn composite of two colors is light in weight and is capable of keeping warm, and has a high elasticity.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The invention relates to yarn production and more particularly to anelastic dope dyed yarn composite of two colors and process ofmanufacturing same, the process being energy saving and causing nopollution, and the elastic dope dyed yarn composite of two colors havingadvantages of keeping warm and high elasticity.

2. Description of Related Art

Dope dyed fiber composite being applicable to thermoplastic fibercomposite, has at least two cross sections of different fibers, in whichone cross section is dyed by dope dye, a dye effect of differenttextures or speckles is formed on the fiber composite.

While the conventional fiber composite can be mass produced with nodischarge being polluted, it is low in warm keeping capability and has alow elasticity. Thus, the need for improvement still exists.

SUMMARY OF THE INVENTION

It is therefore one object of the invention to provide an elastic dopedyed yarn composite of two colors comprising a spin drawn yarn (SDY)(color yarn) having fibers being dope dyed and having fiberspecifications of 50-150d/38-58f; a partial oriented yarn (POY) (hollowyarn) drawn from a direct spinning dope dyed masterbatch or from a dopedyed synthetic materials, the POY having fiber specifications of50-150d/38-58f; and an elastic yarn of high elasticity, the elastic yarnhaving fiber specifications of 40-70d/2-4f; wherein the SDY, the POY,and the elastic yarn are twisted together to form the elastic dope dyedyarn composite of two colors.

It is another object of the invention to provide a process ofmanufacturing an elastic dope dyed yarn composite of two colors,comprising the steps of conveying an SDY (color yarn) to a secondrotating spinning drums unit via a first rotating spinning drums unit;conveying a POY to the second rotating spinning drums unit to join theSDY via a third rotating spinning drums unit, a heater, and a falsetwister; conveying an elastic yarn to the second rotating spinning drumsunit to join the SDY and the POY via a fourth rotating spinning drumsunit; conveying the joined SDY, the POY, and the elastic yarn to anairjet; and activating the airjet to twist and integrate the joined SDY,the POY, and the elastic yarn as an elastic dope dyed yarn compositehaving two colors.

By utilizing the invention, the following advantages can be obtained:Different colors, gray levels, and/or shading can be obtained. Simplestructure can be obtained. Warm keeping and high elasticity can beobtained without having disadvantages associated with the conventionalfiber composite such as low warm keeping and low elasticity.

The above and other objects, features and advantages of the inventionwill become apparent from the following detailed description taken withthe accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 schematically depicts a process of manufacturing an elastic dopedyed yarn composite of two colors according to the invention;

FIG. 2 schematically depicts a portion of the process; and

FIG. 3 is a sectional view taken along line A-A of FIG. 2.

DETAILED DESCRIPTION OF THE INVENTION

Referring to FIGS. 1 to 3, an elastic dope dyed yarn composite of twocolors and process of manufacturing same in accordance with theinvention is shown. The elastic dope dyed yarn composite of two colors 1has fiber specifications of 50-150d/75-115f. Preferably, the fiberspecifications are 130d/96f. The elastic dope dyed yarn composite of twocolors 1 includes a spin drawn yarn (SDY) (color yarn) 11 having fibersbeing dope dyed in a water saving process. The SDY 11 has fiberspecifications of 50-150d/38-58f. Preferably, the fiber specificationsare 75d/48f. The SDY 11 is formed of polyethylene terephthalate (PET),polybutylene terephthalate (PBT), polytrimethylene terephthalate (PTT),acetyl (AC), rayon, nylon, or polypropylene (PP).

The elastic dope dyed yarn composite of two colors 1 further comprises apartial oriented yarn (POY) (hollow yarn) 12 drawn from a directspinning dope dyed masterbatch or from a dope dyed synthetic materials.The POY 12 is very light in weight and has a warm keeping capability.Its fiber specifications are 50-150d/38-58f. Preferably, its fiberspecifications are 50d/48f. Preferably, the POY 12 is formed of PET,PBT, PTT, AC, rayon, nylon, or PP. The POY 12 has a porosity of at least10%. The POY 12 has a color different from that of the SDY 11.

The elastic dope dyed yarn composite of two colors 1 further comprisesan elastic yarn 13 having a very high elasticity. The elastic yarn 13has fiber specifications of 40-70d/2-4f. Preferably, its fiberspecifications are 40d/3f. Preferably, the elastic yarn 13 is formed ofpropylene oxide (PO), Spandex, or Lycra. The SDY 11, the POY 12, and theelastic yarn 13 are twisted together to form the elastic dope dyed yarncomposite of two colors 1.

The elastic dope dyed yarn composite of two colors 1 is made by thetwisting the SDY 11 and the POY 12 together to form a half finishedcomposite wherein the POY 12 has a color different from that of the SDY11, and twisting the half finished composite and the elastic yarn 13together to form the elastic dope dyed yarn composite of two colors 1.Preferably, the fiber specifications of the elastic dope dyed yarncomposite of two colors 1 are 130d/96f. Regarding its constituentcomponents, preferably, the fiber specifications of the SDY 11 are75d/48f, the fiber specifications of the POY 12 are 50d/48f, and thefiber specifications of the elastic yarn 13 are 40d/3f.

Referring to FIGS. 1 and 2 specifically, a process of the manufacturingthe elastic dope dyed yarn composite of two colors 1 in accordance withthe invention is illustrated. As illustrated, the SDY (color yarn) 11 isconveyed to a second rotating spinning drums unit 112 via a firstrotating spinning drums unit 111; the POY 12 is conveyed to the secondrotating spinning drums unit 112 to join the SDY 11 via a third rotatingspinning drums unit 113, a heater 113A, and a false twister 115; theelastic yarn 13 is conveyed to the second rotating spinning drums unit112 to join the SDY 11 and the POY (hollow yarn) 12 via a fourthrotating spinning drums unit 114; the joined SDY 11, the POY 12, and theelastic yarn 13 are conveyed to an airjet 116 which twists andintegrates the joined SDY 11, the POY 12, and the elastic yarn 13 as anelastic dope dyed yarn composite of two colors 1; and the elastic dopedyed yarn composite of two colors 1 is conveyed to and wind on a spool117.

The elastic dope dyed yarn composite of two colors 1 of the inventionhas the following advantages: Different colors, gray levels, and/orshading can be obtained. Simple structure can be obtained. Warm keepingand high elasticity can be obtained without having disadvantagesassociated with the conventional fiber composite such as low warmkeeping and low elasticity. Aesthetics can be obtained.

While the invention has been described in terms of preferredembodiments, those skilled in the art will recognize that the inventioncan be practiced with modifications within the spirit and scope of theappended claims.

What is claimed is:
 1. An elastic dope dyed yarn composite of two colorscomprising: A spin drawn yarn having fibers being dope dyed and havingfiber specifications of 50-150d/38-58f; A partial oriented yarn drawnfrom dope dyed synthetic materials, the partial oriented yarn havingfiber specifications of 50-150d/38-58f; and an elastic yarn of highelasticity, the elastic yarn having fiber specifications of 40-70d/2-4f;wherein the spin drawn yarn, the partial oriented yarn and the elasticyarn are twisted together to form the elastic dope dyed yarn compositeof two colors.
 2. The elastic dope dyed yarn composite of two colors ofclaim 1, wherein the elastic dope dyed yarn composite of two colorshaving fiber specifications of 50-150d/75-115f, and preferably, theelastic dope dyed yarn composite of two colors having fiberspecifications of 130d/96f.
 3. The elastic dope dyed yarn composite oftwo colors of claim 1, wherein the spin drawn yarn preferably has fiberspecifications are 75d/48f.
 4. The elastic dope dyed yarn composite oftwo colors of claim 1, wherein the partial oriented yarn preferably hasfiber specifications are 50d/48f.
 5. The elastic dope dyed yarncomposite of two colors of claim 1, wherein the elastic yarn preferablyhas the fiber specifications are 40d/3f.
 6. The elastic dope dyed yarncomposite of two colors of claim 1, wherein each of the SDY and thepartial oriented yarn are formed of polyethylene terephthalate,polybutylene terephthalate, polytrimethylene terephthalate, acetyl,rayon, nylon, or polypropylene.
 7. The elastic dope dyed yarn compositeof two colors of claim 1, wherein the partial oriented yarn has aporosity of at least 10%.
 8. The elastic dope dyed yarn composite of twocolors of claim 1, wherein the elastic yarn is formed of propyleneoxide, Spandex, or Lycra.
 9. The elastic dope dyed yarn composite of twocolors of claim 9, wherein the partial oriented yarn is drawn from adirect spinning dope dyed masterbatch.
 10. A process of manufacturing anelastic dope dyed yarn composite of two colors, comprising the steps of:conveying a spin drawn yarn to a second rotating spinning drums unit viaa first rotating spinning drums unit; conveying a partial oriented yarnto the second rotating spinning drums unit to join the spin drawn yarnvia a third rotating spinning drums unit, a heater, and a false twister;conveying an elastic yarn to the second rotating spinning drums unit tojoin the SDY and the partial oriented yarn via a fourth rotatingspinning drums unit; conveying the joined spin drawn yarn, the partialoriented yarn, and the elastic yarn to an airjet; and activating theairjet to twist and integrate the joined spin drawn yarn, the partialoriented yarn, and the elastic yarn as an elastic dope dyed yarncomposite having two colors.
 11. The process of claim 10, wherein theelastic dope dyed yarn composite of two colors having fiberspecifications of 50-150d/75-115f, and preferably, the elastic dope dyedyarn composite of two colors having fiber specifications of 130d/96f.12. The process of claim 10, wherein the spin drawn yarn preferably hasfiber specifications are 75d/48f.
 13. The process of claim 10, whereinthe partial oriented yarn preferably has fiber specifications are50d/48f.
 14. The process of claim 10, wherein the elastic yarnpreferably has the fiber specifications are 40d/3f.
 15. The process ofclaim 10, wherein each of the spin drawn yarn and the partial orientedyarn are formed of polyethylene terephthalate, polybutyleneterephthalate, polytrimethylene terephthalate, acetyl, rayon, nylon, orpolypropylene.
 16. The process of claim 10, wherein the partial orientedyarn has a porosity of at least 10%.
 17. The process of claim 10,wherein the yarn is formed of propylene oxide, Spandex, or Lycra. 18.The process of claim 10, wherein the partial oriented yarn is drawn froma direct spinning dope dyed masterbatch.